Doesn't detect dependency cycles

Doesn't detect dependency cycles: a task in harbor-swesmith-rl-artifacts: Harbor SWE-Smith 强化学习数据产物 (Harbor dataset). pipdeptree recognises the packages are installed, but fails to detect the cyclic dependency.

The task

pipdeptree recognises the packages are installed, but fails to detect the cyclic dependency.

Part of keryszhan/harbor-swesmith-rl-artifacts.